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To add or subtract fractions, they need to have the same denominator.
-3 13
Before we can evaluate a sum or difference involving mixed numbers, the mixed numbers must first be rewritten as fractions.
a bc | a* c+b/c | Simplify |
---|---|---|
-5 23 | -(5* 3+2/3) | -17/3 |
-2 13 | -(2* 3+1/3) | -7/3 |
a-(- b)=a+b
Put minus sign in numerator
Add fractions
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Put minus sign in front of fraction
Write as a sum
Write as a sum of fractions
Calculate quotient
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